An NFL franchise in London could boost Britain’s economy by more than £100million a year, says a new Deloitte study.

The two International Series games held last year boosted the nation’s coffers by £32m - and that figure could rise to £58m a year if four games are held at Wembley in 2016.

The NFL’s stated goal is to bring a team to these shores by 2022, and Chancellor George Osborne said last week that he would do everything he could do to house a franchise.

NFL matches staged at Wembley have been a huge success so far, particularly in the financial sense

On the basis of eight games a season, the report - which was launched by MP Savid Javid, secretary of state for Culture, Media and Sport - forecasts London enjoying an annual economic boost of £102m from hosting eight home games, largely driven by fan spending

Including spending outside of the capital linked directly or indirectly to a franchise, Deloitte says a London team’s total potential gross output in Britain is estimated to be £158m a season.

Deloitte is assuming players and staff would play two games on four visits each season, rather than being based in London.

The 30-page study casts doubt on the feasibility of a Super Bowl in London.

Detroit Lions beat Atlanta Falcons 22-21 when the two teams met at Wembley in late October

A major hurdle to overcome would be selecting a suitable kick-off time. Starting at 4pm EST would be 9pm in London and make transport away from Wembley challenging on a Sunday night.

Deloitte says a 6pm kickoff ‘may be unlikely to attract the desired television audience in the US,’ where it would be 10 am on the West Coast.

Predicting that fewer die-hard fans and season-ticket holders would be able to cross the Atlantic, Deloitte cautions that the atmosphere inside the stadium and on television could be affected and impact on the ‘wider global brand presence.’

‘The reaction from the NFL’s core US market could focus on the negative implications of moving a definitively “American” event overseas for reasons that may be perceived as solely financial or commercial,’ the report says.

The NFL has seen a rise in popularity in the UK, and George Osborne is keen to encourage a London franchise